<em>They differ from both parents and also from each other. This occurs through a number of mechanisms, including crossing-over, the independent assortment of chromosomes during anaphase I, and random fertilization. When homologous chromosomes form pairs during prophase I of meiosis I, crossing-over can occur</em>
A chromosome is made up two Identical Sister Chromatids. And each sister chromatids are joined at the centromere. A copy of each chromosome is inherited from a male parent and a female parent and this explains the characteristic traits possessed by their offspring (such as facial features reminiscent of the parents).
The answer is Frederick Douglass. He wrote an autobiography entitled "Narrative of the Life of Frederick Douglass: An American Slave, Written by Himself." The book was written in 1845 and became a best seller. Consequently, it helped further the cause of abolitionism in the United States.
